System of hot-water distribution.



1. A. WlLLiAMS. SYSTEM OF HOT WATER DISTRIBUTION.

APPLICATION FILED DEC- 9, 1914.

1,173,759. Patented Feb. 29, 11916.

WITNESSES the 0m the 0 1? I it me ta tti W a ter t die:

and an ation' 0 th back f thP primvenxon may be Obtilll pipe 1 ch'z'ywingf and v 111 only m P um 93 13 Jean gh ipe iirecily a W he tune w the 1305. an

pg 16, and :L pip tion of be hot lpe com. mled cum v ted check will when t Q: "rater mugh It the Jim (.1

portien and; 2'

,1 the 1,2 and 1s ement of pjspas 1 deb fer the {3H0 pro vi mm the sail 0. coil and wnneat mu-ts 105 I claim 1. In a system of the class described, the combination with a tank having a feed pipe .and a discharge pipe leading to fixtures,

and a'coil having an' inlet connection with the lower portion of the tank and havinga return pipe leading from the coil to the tank, of an auxiliary pipe connected at one end to the tank diseharge pipe and at its opposite end to said return pipe, a control valve in the tank discharge pipe, a control valve in the auxiliary pipe, and a check valve in the return pipe between the tank and the point of connection of said return pipe and auxiliary pipe, said check valve adapted to allow flow of water through the return pipe only toward the tank, substantially as described.

2. In a system of water distribution, thecombination with a tank having a discharge pipe leading to fixtures and having a return pipe leading from a point of hot water supply, of an auxiliary pipe connected at one 3. In a system of water distribution, the

combination with a tank having a discharge.

pipe leading to fixtures, and a heating coil having a return pipe leading to the tank and having a supply pipe leading from the tank to the coil, of an auxiliary pipe connecting the return pipe and the discharge pipe, means for, controlling the flow through the discharge pipe and auxiliary pipe 'at will, and means for preventing the flow through the return pipe except toward the tank.

JOHN A. WILLIAMS.

Witnesses p v H. L. DAVIS, H. B. GEMBERLING. 

